[Issue 16590] Wrong di generation for ref methods

[via Digitalmars-d-bugs]

https://issues.dlang.org/show_bug.cgi?id=16590

--- Comment #1 from Satoshi <satoshi at rikarin.org> ---
When I create function like:

class TestClass {
    int aa;

    auto ref foo() {
        return aa;
    }
}

It is exported correctly, but when I create it like:
class TestClass {
    int aa;

    ref foo() { // without auto
        return aa;
    }
}

it is exported like:
class TestClass {
    int aa;

    ref foo(); // Cannot deduce return type
}

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